Wide-body vehicle axle

Abstract

The application provides a wide-body vehicle axle, which comprises a first kingpin seat, a second kingpin seat, an upper wing plate, a lower wing plate and two side plates, the first kingpin shaft comprises two oppositely arranged first side wings, the second kingpin shaft comprises two oppositely arranged second side wings, the two side plates are oppositely arranged, one end of each side plate is fixedly connected with each first side wing, the other end of each side plate is fixedly connected with each second side wing, the first kingpin seat comprises a first upper boss and a first lower boss which are oppositely arranged, the second kingpin shaft comprises a second upper boss and a second lower boss which are oppositely arranged, the upper wing plate is fixedly connected between the first upper boss and the second upper boss, the lower wing plate is fixedly connected between the first lower boss and the second lower boss, and the first kingpin seat, the second kingpin seat, the upper wing plate, the lower wing plate and the two side plates form the main body of the axle. The wide-body vehicle axle has the advantages of simple structure, high overall strength, low self weight, low cost and reduced production difficulty.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to an axle for a wide-body vehicle. Background Technology

[0002] The axle is one of the core components of a wheeled vehicle. It is connected to the chassis via the suspension, and wheels are mounted at both ends of the axle to bear the vehicle's load and maintain its normal movement on the road. Mining dump trucks operate under harsh conditions, with a high proportion of heavy-load uphill and downhill operations on steep slopes, often accompanied by high-frequency impact alternating loads. This places high demands on the axle's load-bearing capacity and welding quality. In addition, the road conditions in mining areas are poor, and road maintenance is not timely, requiring dump trucks to have high passability. As the core of the vehicle chassis, the axle's ground clearance largely represents the vehicle's passability.

[0003] Vehicle axles can be broadly categorized by function into steering axles and drive axles. In addition to being a necessary steering mechanism, the steering axle of a mining dump truck also bears a certain proportion of the load. Taking a wide-body off-highway dump truck (hereinafter referred to as "wide-body truck") as an example, it typically bears 15%-25% of the load. The axle housing of wide-body truck steering axles is mostly an integral welded structure. Existing welded axles mainly consist of the front axle body, thrust rod seat, and suspension cylinder seat. The front axle body is composed of several parts welded together, including side plates, upper and lower flanges, left and right guard plates, an upper boss, and a lower boss. The cross-section is rectangular. The upper and lower flanges are bent after being machined with master pin holes. During welding, the lower flange is usually fixed first, then the side plates and left and right guard plates are welded to the lower flange in sequence, followed by the upper flange, and finally the upper and lower bosses. Therefore, the main body of existing welded axle structures is made of sheet metal through cutting and bending, resulting in lower costs. However, this also leads to lower overall axle housing strength and a tendency for the welds of the left and right guard plates to crack.

[0004] While existing forged axle structures largely avoid the problem of insufficient axle strength and reduce axle weight, forged axle structures are not only expensive to process but also have mold costs, which seriously restricts the promotion and use of forged axle structures in the mining truck industry. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an axle for a wide-body vehicle, which has a simple structure, high overall strength, low weight, low cost, and reduces production difficulty.

[0006] This invention provides an axle for a wide-body vehicle, comprising a first kingpin seat, a second kingpin seat, an upper wing plate, a lower wing plate, and two side plates. The first kingpin seat includes two opposing first side wings, and the second kingpin seat includes two opposing second side wings. The two side plates are oppositely arranged, with one end of each side plate fixedly connected to each of the first side wings and the other end of each side plate fixedly connected to each of the second side wings. The first kingpin seat includes opposing first upper boss and first lower boss, and the second kingpin seat includes opposing second upper boss and second lower boss. The upper wing plate is fixedly connected between the first upper boss and the second upper boss, and the lower wing plate is fixedly connected between the first lower boss and the second lower boss. The first kingpin seat, the second kingpin seat, the upper wing plate, the lower wing plate, and the two side plates form the axle body.

[0007] In one embodiment, the first side wing has a first crescent-shaped opening at one end near the side plate, and the side plate has a first crescent-shaped portion at one end that mates with the first side wing. The first crescent-shaped opening and the first crescent-shaped portion are fixedly connected. The second side wing has a second crescent-shaped opening at one end near the side plate, and the side plate has a second crescent-shaped portion at one end that mates with the second side wing. The second crescent-shaped opening and the second crescent-shaped portion are fixedly connected.

[0008] In one embodiment, the upper wing plate includes a first connecting plate, a second connecting plate, and a third connecting plate fixedly connected in sequence. The first connecting plate and the second connecting plate form a first included angle α, which is 120°~170°. The second connecting plate and the third connecting plate form a second included angle b, which is 120°~170°. The structures at both ends of the upper wing plate are symmetrically arranged. The lower wing plate includes a fourth connecting plate, a fifth connecting plate, and a sixth connecting plate fixedly connected in sequence. The fourth connecting plate and the fifth connecting plate form a third included angle c, which is 120°~170°. The fifth connecting plate and the sixth connecting plate form a fourth included angle d, which is 120°~170°. The structures at both ends of the lower wing plate are symmetrically arranged.

[0009] In one embodiment, the first side wing is fixedly connected to a first limiting block, and the second side wing is fixedly connected to a second limiting block. The first limiting block and the second limiting block are used to limit the steering structure of the axle.

[0010] In one embodiment, the axle of the wide-body vehicle further includes a first crescent block and a second crescent block, which are respectively fixedly connected to the upper wing plate. The first crescent block is located at one end of the upper wing plate near the first kingpin seat, and the second crescent block is located at one end of the upper wing plate near the second kingpin seat.

[0011] In one embodiment, the axle of the wide-body vehicle further includes a steering cylinder seat, which is fixedly connected to the side plate.

[0012] In one embodiment, the steering cylinder seat includes a base plate, a first fixing plate, a second fixing plate, a first reinforcing plate, and a threaded seat. The first fixing plate and the second fixing plate are disposed opposite to each other and fixedly connected to the base plate. The first reinforcing plate is fixedly connected between the first fixing plate and the second fixing plate. The base plate is fixedly connected to the side plate. The threaded seat is fixedly connected to the first fixing plate. The threaded seat is used to install and limit the first pin of the steering cylinder seat.

[0013] In one embodiment, the axle of the wide-body vehicle includes two suspension cylinder supports and two longitudinal push rod supports. Each suspension cylinder support is fixedly connected to the upper wing plate, and each longitudinal push rod support is disposed opposite to the steering cylinder seat. One end of each longitudinal push rod support is fixedly connected to the suspension cylinder support, and the other end of each longitudinal push rod support is fixedly connected to a side plate.

[0014] In one embodiment, the suspension cylinder support includes a first upright plate, a second upright plate, a second reinforcing plate, and a first cover plate. The first upright plate and the second upright plate are disposed opposite to each other. The second reinforcing plate is fixedly connected between the first upright plate and the second upright plate. The suspension cylinder support is provided with a second shaft hole that penetrates through the first upright plate and the second upright plate. A second pin is engaged with the second shaft hole for mounting the suspension cylinder. The first cover plate is fixedly connected to the first upright plate. The first cover plate is provided with a first groove. The limiting part of the second pin is disposed in the first groove for radial and axial limiting of the second pin.

[0015] In one embodiment, the first kingpin seat is provided with a first pin hole, and the second kingpin seat is provided with a second pin hole, the first pin hole and the second pin hole being used to install the kingpin of the vehicle.

[0016] The axle of this invention is provided with a first kingpin seat and a second kingpin seat. The upper wing plate, the lower wing plate and the two side plates are respectively fixedly connected between the first kingpin seat and the second kingpin seat to form a complete axle body. It not only has a simple structure, reduces the weight of the axle and increases the strength of the axle, but also takes into account the convenience of production and processing, reduces the production difficulty and production cost. It has high load-bearing capacity and high reliability. The overall structure and function are more perfect and it is suitable for harsh working environments such as heavy-duty uphill and downhill slopes and rugged roads in mines. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the axle structure of the wide-body vehicle of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the axle body of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the first master pin seat of the present invention.

[0021] Figure 4 This is a schematic diagram of the steering cylinder seat of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the suspension cylinder support of the present invention.

[0023] Reference numerals: First crescent-shaped opening - 101; First pin hole - 104; Second pin hole - 105; Second axle hole - 106; Axle body - 11; First kingpin seat - 111; First seat - 1111; First side wing - 1112; First upper boss - 1113; First lower boss - 1114; Second kingpin seat - 112; Second side wing - 1122; Second upper boss - 1123; Upper wing plate - 113; First connecting plate - 1131; Second connecting plate - 1132; Third connecting plate - 1133; Lower wing plate - 114; Side plate - 115 First limiting block - 116; Second limiting block - 117; First crescent block - 121; Second crescent block - 122; Steering cylinder seat - 13; Base plate - 131; First fixing plate - 132; Second fixing plate - 133; First reinforcing plate - 134; Threaded seat - 135; Suspension cylinder support - 14; First upright plate - 141; First bending part - 1411; Second upright plate - 142; Second bending part - 1421; Second reinforcing plate - 143; First cover plate - 144; Second pin - 145; First groove - 103; Longitudinal push rod support - 15.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0029] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0030] like Figures 1 to 5As shown, the wide-body vehicle's axle includes a first kingpin seat 111, a second kingpin seat 112, an upper wing plate 113, a lower wing plate 114, and two side plates 115. The first kingpin seat 111 includes two opposing first side plates 1112, and the second kingpin seat 112 includes two opposing second side plates 1122. The two side plates 115 are opposite to each other, with one end of each side plate 115 fixedly connected to each first side plate 1112 and the other end of each side plate 115 fixedly connected to each second side plate 1122. The first kingpin seat 111 includes a first upper boss 1113 and a first lower boss 1114 opposite to each other. The pin seat 112 includes a second upper boss 1123 and a second lower boss disposed opposite to each other. An upper wing plate 113 is fixedly connected between the first upper boss 1113 and the second upper boss 1123. The first upper boss 1113 and the second upper boss 1123 are used for mounting and welding the upper wing plate 113. A lower wing plate 114 is fixedly connected between the first lower boss 1114 and the second lower boss. The first lower boss 1114 and the second lower boss are used for mounting and welding the lower wing plate 114. The first master pin seat 111, the second master pin seat 112, the upper wing plate 113, the lower wing plate 114, and the two side plates 115 form the axle body 11. The first master pin seat 111 has a first pin hole 104, and the second master pin seat 112 has a second pin hole 105. The first pin hole 104 and the second pin hole 105 are used for mounting the vehicle's master pin. In this embodiment, the first master pin seat 111 and the second master pin seat 112 are cast integral structures, not welded structures. The first master pin seat 111 also includes a first seat body 1111, a first side wing 1112, a first upper boss 1113, and a first lower boss 1114, which are respectively fixedly connected to the first seat body 1111. A first pin hole 104 is provided through the first upper boss 1113, the first seat body 1111, and the first lower boss 1114. The second master pin seat 112 also includes a second seat body, a second side wing 1122, a second upper boss 1123, and a second lower boss, which are respectively fixedly connected to the second seat body. A second pin hole 105 is provided through the second upper boss 1123, the second seat body, and the second lower boss. It can be understood that the first seat body 1111, the first side wing 1112, the first upper boss 1113, and the first lower boss 1114 are formed by casting to form the first master pin seat 111, and the second seat body, the second side wing 1122, the second upper boss 1123, and the second lower boss are formed by casting to form the second master pin seat 112. The first kingpin seat 111, the second kingpin seat 112, the upper flange 113, the lower flange 114, and the two side plates 115 are all fixed by welding. Therefore, the first kingpin seat 111 and the second kingpin seat 112, which are integrally cast, are the main load-bearing positions of the axle. Compared with the welded structure of traditional axles, they have higher strength and greater reliability.

[0031] The axle of the present invention is provided with a first kingpin seat 111 and a second kingpin seat 112. The upper wing plate 113, the lower wing plate 114 and the two side plates 115 are respectively fixedly connected between the first kingpin seat 111 and the second kingpin seat 112 to form a complete axle body 11. It not only has a simple structure, reduces the weight of the axle, and increases the strength of the axle, but also takes into account the convenience of production and processing, reduces the production difficulty and production cost. It has high load-bearing capacity and high reliability. The overall structure and function are more perfect and it is suitable for harsh working environments such as heavy-duty uphill and downhill slopes and rugged roads in mines.

[0032] like Figures 1 to 3 As shown, the first side wing 1112 has a first crescent-shaped opening 101 at one end near the side plate 115, and the side plate 115 has a first crescent-shaped portion at one end that mates with the first side wing 1112. The first crescent-shaped opening 101 and the first crescent-shaped portion are fixedly connected. The second side wing 1122 has a second crescent-shaped opening at one end near the side plate 115, and the side plate 115 has a second crescent-shaped portion at one end that mates with the second side wing 1122. The second crescent-shaped opening and the second crescent-shaped portion are fixedly connected. The first crescent-shaped opening 101 and the first crescent-shaped portion, and the second crescent-shaped opening and the second crescent-shaped portion enable the weld splicing to be more reasonable and the welding strength to be more reliable. The first seat body 1111 of the first kingpin seat 111 and the second seat body of the second kingpin seat 112 replace the left and right guard plates of the traditional axle, which greatly reduces the production difficulty and increases the strength of the axle body 11.

[0033] Preferably, the upper wing plate 113 includes a first connecting plate 1131, a second connecting plate 1132, and a third connecting plate 1133 connected in sequence. A first included angle α is formed between the first connecting plate 1131 and the second connecting plate 1132, with the first included angle α being 120°~170°. A second included angle b is formed between the second connecting plate 1132 and the third connecting plate 1133, with the second included angle b being 120°~170°. The structures at both ends of the upper wing plate 113 are symmetrically arranged. The lower wing plate 114 includes a fourth connecting plate, a fifth connecting plate, and a sixth connecting plate connected in sequence. A third included angle c is formed between the fourth connecting plate and the fifth connecting plate, with the third included angle c being 120°~170°. A fourth included angle d is formed between the fifth connecting plate and the sixth connecting plate, with the fourth included angle d being 120°~170°. The structures at both ends of the lower wing plate 114 are symmetrically arranged. In this embodiment, the 120°~170° is preferably 120°, 130°, 140°, 150°, 160° or 170°, etc. The setting of the first included angle a, the second included angle b, the third included angle c and the fourth included angle d can increase the ground clearance of the axle, so that the axle body 11 can maximize the ground clearance of the axle while having high load-bearing capacity and high reliability. In addition, by setting different chamfers, slopes and depths on the first master pin seat 111 and the second master pin seat 112, the welding of the axle body 11 is simpler and more reasonable, thereby enhancing the welding strength of the axle body 11. For example, the chamfer structure of the first seat 1111, the chamfer structure of the second seat, the tilt angle of the first side wing 1112, the tilt angle of the second side wing 1122, the depth of the first pin hole 104 and the depth of the second pin hole 105, etc.

[0034] Preferably, the first side wing 1112 is fixedly connected to the first limiting block 116, and the second side wing 1122 is fixedly connected to the second limiting block 117. The first limiting block 116 and the second limiting block 117 are used to limit the steering structure of the axle.

[0035] Please continue to refer to this. Figures 1 to 3 The axle of the wide-body vehicle also includes a first crescent block 121 and a second crescent block 122. The first crescent block 121 and the second crescent block 122 are respectively fixedly connected to the upper wing plate 113. The first crescent block 121 is located at one end of the upper wing plate 113 near the first kingpin seat 111, and the second crescent block 122 is located at one end of the upper wing plate 113 near the second kingpin seat 112. The first crescent block 121 and the second crescent block 122 are used to enhance the local structural strength.

[0036] like Figure 1 and Figure 4As shown, the axle of the wide-body vehicle also includes a steering cylinder seat 13, which is fixedly connected to the side plate 115 and provides an installation position for the vehicle's steering cylinder. The steering cylinder seat 13 includes a base plate 131, a first fixing plate 132, a second fixing plate 133, a first reinforcing plate 134, and a threaded seat 135. The first fixing plate 132 and the second fixing plate 133 are arranged opposite to each other and fixedly connected to the base plate 131. The first reinforcing plate 134 is fixedly connected between the first fixing plate 132 and the second fixing plate 133 for positioning and increasing structural strength. The base plate 131 is fixedly connected to the side plate 115, so that the first fixing plate 132 and the second fixing plate 133 are fixedly connected to the side plate 115 of the axle body 11 through the base plate 131. The base plate 131 can increase the welding area between the steering cylinder seat 13 and the side plate 115 and increase structural strength. The threaded seat 135 is fixedly connected to the first fixing plate 132 and is used to install and limit the first pin of the steering cylinder seat 13. In this embodiment, the threaded seat 135 is welded to the first fixed plate 132. The steering cylinder seat 13 is provided with a first shaft hole, which passes through the first fixed plate 132 and the second fixed plate 133. The first pin is engaged with the first shaft hole for mounting the steering cylinder. The threaded seat 135 is provided with a first slot, and the limiting part of the first pin is provided in the first slot to achieve radial and axial limiting of the first pin. The base plate 131 can be a single plate structure, which can further increase the welding area between the steering cylinder seat 13 and the side plate 115 to increase the welding strength. The base plate 131 can also be two separate plates, which can further reduce the weight of the axle.

[0037] like Figure 1 and Figure 5 As shown, the axle of the wide-body vehicle includes two suspension cylinder supports 14 and two longitudinal push rod supports 15. Each suspension cylinder support 14 is fixedly connected to the axle body 11, that is, each suspension cylinder support 14 is welded to the upper flange 113. The suspension cylinder supports 14 are used to provide installation positions for the vehicle's lifting cylinders and lateral push rods. Each longitudinal push rod support 15 is arranged opposite to the steering cylinder seat 13. One end of each longitudinal push rod support 15 is fixedly connected to each suspension cylinder support 14, and the other end of each longitudinal push rod support 15 is fixedly connected to a side flange 115 to increase the structural strength and structural stability of the longitudinal push rod support 15.

[0038] like Figure 5As shown, the suspension cylinder support 14 includes a first upright plate 141, a second upright plate 142, a second reinforcing plate 143, and a first cover plate 144. The first upright plate 141 and the second upright plate 142 are arranged opposite to each other. The second reinforcing plate 143 is fixedly connected between the first upright plate 141 and the second upright plate 142, and is used to fix the first upright plate 141 and the second upright plate 142 and increase the structural strength of the suspension cylinder support 14. The suspension cylinder support 14 is provided with at least two second shaft holes 106, which are provided through the first upright plate 141 and the second upright plate 142. The second pin 145 cooperates with the second shaft holes 106 for installing the suspension cylinder, push rod, etc. The first cover plate 143... 4. Fixedly connected to the first upright plate 141, the first cover plate 144 is provided with a first groove 103, and the limiting part of the second pin 145 is provided in the first groove 103 for radial and axial limiting of the second pin 145. The first cover plate 144 is installed on the first upright plate 141 by bolts to limit the rotation and axial movement of the pin and avoid the possibility of the bolt being cut off. The second pin 145 is directly installed on the axle and is used to fix the vehicle's cylinder and push rod, etc. Depending on the fixing structure, the second pin 145 has different diameters and lengths, but it can be understood that the second pin 145 is used for installation and fixing on the suspension cylinder support 14. In this embodiment, the two ends of the first upright plate 141 are processed to form a bent structure, referred to as the first bent portion 1411, which is used to improve the welding thermal stress zone. The thickness of the first bent portion 1411 is less than the thickness of the first upright plate 141, which facilitates grinding into a dovetail shape after welding and increases the fatigue life of the weld. The two ends of the second upright plate 142 are processed to form a bent structure, referred to as the second bent portion 1421, which is used to improve the welding thermal stress zone. The thickness of the second bent portion 1421 is less than the thickness of the second upright plate 142, which facilitates grinding into a dovetail shape after welding and increases the fatigue life of the weld. In addition, the suspension cylinder seat also includes multiple mounting plates. The mounting plates are annular plates, which are fixedly connected to the two sides of the first upright plate 141 and the second upright plate 142. The mounting plates are disposed at the second shaft hole 106 and other through holes of the suspension cylinder support 14. The mounting plates are used to raise the structure to facilitate the installation of other parts of the vehicle.

[0039] It is understandable that the structure of the longitudinal push rod support 15 is the same as or roughly the same as the structure of the suspension cylinder support 14, and will not be described in detail here.

[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An axle for a wide-body vehicle, characterized in that, The device includes a first kingpin seat (111), a second kingpin seat (112), an upper wing plate (113), a lower wing plate (114), and two side plates (115). The first kingpin seat (111) includes two opposing first side wings (1112), and the second kingpin seat (112) includes two opposing second side wings (1122). The two side plates (115) are opposite to each other. One end of each side plate (115) is fixedly connected to each of the first side wings (1112), and the other end of each side plate (115) is fixedly connected to each of the second side wings (1122). The first kingpin seat (111) The axle includes a first upper boss (1113) and a first lower boss (1114) arranged opposite to each other. The second kingpin seat (112) includes a second upper boss (1123) and a second lower boss arranged opposite to each other. The upper wing plate (113) is fixedly connected between the first upper boss (1113) and the second upper boss (1123). The lower wing plate (114) is fixedly connected between the first lower boss (1114) and the second lower boss. The first kingpin seat (111), the second kingpin seat (112), the upper wing plate (113), the lower wing plate (114), and the two side plates (115) form the axle body. (11); The first side wing (1112) has a first crescent-shaped opening (101) at one end near the side plate (115), and the side plate (115) has a first crescent-shaped portion at one end that mates with the first side wing (1112). The first crescent-shaped opening (101) and the first crescent-shaped portion are fixedly connected. The second side wing (1122) has a second crescent-shaped opening at one end near the side plate (115), and the side plate (115) has a second crescent-shaped portion at one end that mates with the second side wing (1122). The second crescent-shaped opening and the second crescent-shaped portion are fixedly connected. The first main pin seat ( 111) also includes a first base body, the first base body, the first side wing (1112), the first upper boss (1113) and the first lower boss (1114) are formed by casting the first master pin seat (111), the second master pin seat (112) also includes a second base body, the second base body, the second side wing (1122), the second upper boss (1123) and the second lower boss are formed by casting the second master pin seat (112), the first master pin seat (111), the second master pin seat (112), the upper wing plate (113), the lower wing plate (114) and the two side plates (115) are all fixed by welding.

2. The axle of the wide-body vehicle as described in claim 1, characterized in that, The upper wing plate (113) includes a first connecting plate (1131), a second connecting plate (1132), and a third connecting plate (1133) that are fixedly connected in sequence. The first connecting plate (1131) and the second connecting plate (1132) form a first included angle α, which is 120°~170°. The second connecting plate (1132) and the third connecting plate (1133) form a second included angle b, which is 120°~170°. The structures at both ends of the upper wing plate (113) are symmetrically arranged. The lower wing plate (114) includes a fourth connecting plate, a fifth connecting plate, and a sixth connecting plate that are fixedly connected in sequence. The fourth connecting plate and the fifth connecting plate form a third included angle c, which is 120°~170°. The fifth connecting plate and the sixth connecting plate form a fourth included angle d, which is 120°~170°. The structures at both ends of the lower wing plate (114) are symmetrically arranged.

3. The axle of the wide-body vehicle as described in claim 1, characterized in that, The first side wing (1112) is fixedly connected to a first limiting block (116), and the second side wing (1122) is fixedly connected to a second limiting block (117). The first limiting block (116) and the second limiting block (117) are used to limit the steering structure of the axle.

4. The axle of the wide-body vehicle as described in claim 1, characterized in that, The axle of the wide-body vehicle also includes a first crescent block (121) and a second crescent block (122). The first crescent block (121) and the second crescent block (122) are respectively fixedly connected to the upper wing plate (113). The first crescent block (121) is located at one end of the upper wing plate (113) near the first kingpin seat (111), and the second crescent block (122) is located at one end of the upper wing plate (113) near the second kingpin seat (112).

5. The axle of the wide-body vehicle as described in claim 1, characterized in that, The wide-body vehicle's axle also includes a steering cylinder seat (13), which is fixedly connected to the side plate (115).

6. The axle of the wide-body vehicle as described in claim 5, characterized in that, The steering cylinder seat (13) includes a base plate (131), a first fixing plate (132), a second fixing plate (133), a first reinforcing plate (134), and a threaded seat (135). The first fixing plate (132) and the second fixing plate (133) are arranged opposite to each other and fixedly connected to the base plate (131). The first reinforcing plate (134) is fixedly connected between the first fixing plate (132) and the second fixing plate (133). The base plate (131) is fixedly connected to the side plate (115). The threaded seat (135) is fixedly connected to the first fixing plate (132). The threaded seat (135) is used to install and limit the first pin of the steering cylinder seat (13).

7. The axle of the wide-body vehicle as described in claim 5, characterized in that, The axle of the wide-body vehicle includes two suspension cylinder supports (14) and two longitudinal push rod supports (15). Each suspension cylinder support (14) is fixedly connected to the upper wing plate (113). Each longitudinal push rod support (15) is arranged opposite to the steering cylinder seat (13). One end of each longitudinal push rod support (15) is fixedly connected to each suspension cylinder support (14), and the other end of each longitudinal push rod support (15) is fixedly connected to a side plate (115).

8. The axle of the wide-body vehicle as described in claim 7, characterized in that, The suspension cylinder support (14) includes a first upright plate (141), a second upright plate (142), a second reinforcing plate (143), and a first cover plate (144). The first upright plate (141) and the second upright plate (142) are arranged opposite to each other. The second reinforcing plate (143) is fixedly connected between the first upright plate (141) and the second upright plate (142). The suspension cylinder support (14) is provided with a second shaft hole (106). The second shaft hole (106) passes through the first upright plate (141) and the second upright plate (142). The second pin (145) cooperates with the second shaft hole (106) to install the suspension cylinder. The first cover plate (144) is fixedly connected to the first upright plate (141). The first cover plate (144) is provided with a first groove (103). The limiting part of the second pin (145) is provided in the first groove (103) to limit the second pin (145) radially and axially.

9. The axle of the wide-body vehicle as described in claim 1, characterized in that, The first master pin seat (111) is provided with a first pin hole (104), and the second master pin seat (112) is provided with a second pin hole (105). The first pin hole (104) and the second pin hole (105) are used to install the master pin of the vehicle.

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